Answer:
John's Computer Software Store
A) Probability that a person who walks by the store will enter the store:
= 41%
B) The probability that a person who walks into the store will buy something:
= 45%
C) The probability that a person who walks by the store will come in and buy something:
= 18%
D) The probability that a person who comes into the store will buy nothing:
= 55%
Step-by-step explanation:
a) Data and Calculations:
Number of people who walked by the store yesterday = 137
Number of those who came into the store = 56
Number of people who came into the store and bought something = 25
Number of people who came into the store and bought nothing = 31 (56 - 25)
A) Probability that a person who walks by the store will enter the store:
= 56/137
= 0.4087
= 0.41
= 41%
B) The probability that a person who walks into the store will buy something:
= 25/56
= 0.4464
= 0.45
= 45%
C) The probability that a person who walks by the store will come in and buy something:
= 56/137 * 25/56
= 0.41 * 0.45
= 0.1845
= 0.18
= 18%
D) The probability that a person who comes into the store will buy nothing:
= 31/56
= 0.5536
= 0.55
= 55%
